The plan + canonical decisions: tasks task-178. Full spec snapshot: docs/PLAN.md.

apps/         each ships independently
packages/     shared libs (tokens, ui, utils, types)
tools/        repo-internal scripts
docs/         design / architecture / runbooks

• pnpm 11 with workspace catalog: for shared dep versions
• Vite+ for build / test / lint / fmt / task running (vp run with dependsOn, -r, -t, content-addressable cache)
• oxlint + eslint dual lint, overlap killed by eslint-plugin-oxlint
• DTCG tokens in packages/tokens/, compiled by style-dictionary to CSS vars + Tailwind preset + typed TS
• Tailwind v4 + DaisyUI as the runtime styling layer
• knip + manypkg + typesync + update-ts-references for hygiene
• Renovate for dep bumps
• No Turbo, no Prettier, no changesets

Not live yet. Migrations of source repos land here over the next sessions; originals stay authoritative until Parker greenlights the cutover.